CN202812791U - Gas cylinder integrated valve for automotive liquefied natural gas - Google Patents
Gas cylinder integrated valve for automotive liquefied natural gas Download PDFInfo
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- CN202812791U CN202812791U CN 201220245534 CN201220245534U CN202812791U CN 202812791 U CN202812791 U CN 202812791U CN 201220245534 CN201220245534 CN 201220245534 CN 201220245534 U CN201220245534 U CN 201220245534U CN 202812791 U CN202812791 U CN 202812791U
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Abstract
The utility model relates to a gas cylinder integrated valve for automotive liquefied natural gas. The main technically characterized in that a distribution head 1 is a flat cylindrical porous cavity body in which pipelines are reserved; a plurality of screw joints are formed on the upper end surface of the distribution head; a one-way throttling valve 2, a check valve I3, a liquidometer sensor assembly 6, an liquidometer air throttle valve 11, an emergent cut-off valve 12, a check valve III 14and a pressurizing and pressure regulating valve 17 are sealed by low-temperature resistant sealing members and are directly integrally screwed at the corresponding screw joints of the distribution head by threads; connection pipelines between valves and the distribution head are eliminated in the prior art; three welding type screw ports and liquid filling joints are respectively welded on side holes of the distribution head so as to connect the distribution head into a whole; the liquidometer sensor assembly detects the liquid level height in the bottle; a pressure gauge monitors the change of the pressure; and a primary safety valve and a secondary safety valve form double insurance so as to guarantee the safety of the gas cylinder and the system. The gas cylinder integrated valve has the advantages of compact structure, good reliability and safety, low cost, convenience in detection and maintenance and the like.
Description
Technical field
The utility model relates to a kind of Vehicular liquefied natural gas cylinder integrated valve, belongs to low-temperature liquefaction natural gas applications technical field, and it is adapted to topping up and the feed flow of Vehicular liquefied natural gas cylinder especially.
Background technique
LNG Liquefied natural gas (LNG) gas cylinder is a kind of cryogenic liquide insulated gas cylinder, and the topping up of liquefied natural gas bottle and feed flow must be realized by various control valves.In the background technique, present liquefied natural gas bottle both domestic and external manufacturer all is the Placement that adopts " distributing head-stainless-steel pipe-control valve-stainless-steel pipe-connecting head-exterior line " installing of its control valve, namely at a plurality of jointings of distributing head many stainless-steel pipes that are welded, then stainless-steel pipe is welded to an end of control valve, the other end of valve links to each other with exterior line with jointing by the stainless-steel pipe that is welded again.The major defect that this Placement exists in actual use is manufacturing and difficult in maintenance, in case particularly valve has damage, must carry out stainless-steel pipe and cut and weld and just can carry out maintenance or the replacing of valve, the external long stainless-steel pipe of distributing head can cause the increase that heat transmits simultaneously, is unfavorable for the thermal insulation of low temperature cylinder.Publication number be CN101761776A patent disclosure the distributing head on a kind of mounted gas cylinder, it prevents that with the liquid entering hole place one-way valve of backflow moves to the mid-rear portion in distributing head, it makes the speed of topping up be improved to a certain extent, but other control valve still is connected in distributing head by the Stainless Steel Tube pipeline, and same the existence makes and defective difficult in maintenance, that the Cryo Heat Insulation effect is relatively poor.For overcoming the deficiency of above existence, Vehicular liquefied natural gas cylinder integrated valve is developed.
Summary of the invention
Technical problem to be solved in the utility model is that a kind of Vehicular liquefied natural gas cylinder integrated valve will be provided, it directly is integratedly connected on the distributing head by screw thread one-way throttle valve, Emergeny Cutoff Valves, economic air throttle, supercharging pressure regulator valve and a plurality of stop valve respectively, cancelled the connecting tube between each valve and the distributing head, structure is compacter, can greatly reduce heat transmission, reduce cost, can guarantee reliably to use safety simultaneously, easy to maintenance quick.
The technological scheme that its technical problem that solves the utility model adopts is: it comprises distributing head, one-way throttle valve, stop valve I, stop valve II, welding type screw socket I, level meter sensor cluster, secondary safety valve, pressure gauge, cross fitting, primary safety valve for inner container, economic air throttle, Emergeny Cutoff Valves, welding type screw socket II, stop valve III, topping up joint, topping up safety check, supercharging pressure regulator valve, welding type screw socket III, throttle valve gland and black box, vaporizer
Distributing head is the inner porous cavity of reserving pipeline of oblate cylindricality, there are 7 threaded joint B the upper-end surface of distributing head, C, D, E, F, G, H, one-way throttle valve, the stop valve I, the level meter sensor cluster, economic air throttle, Emergeny Cutoff Valves, the stop valve III, the supercharging pressure regulator valve all with the sealing of low temperature resistant Sealing and respectively by screw thread directly the integrated corresponding threaded joint one-way throttle valve that is bolted in the distributing head upper-end surface be bolted in the H threaded joint of distributing head upper-end surface and fixing by throttle valve gland and black box sealing
The A of distributing head lower end surface, C soldering opening connect respectively the liquid pipe that is built in gas cylinder, and the D soldering opening of distributing head lower end surface connects the gas phase pipeline that is built in gas cylinder,
Welding type screw socket I, welding type screw socket II, topping up joint and welding type screw socket III are welded respectively in the side opening of distributing head, form an integral body with distributing head, welding type screw socket I, welding type screw socket II, topping up joint and welding type screw socket III respectively four interfaces of D, F, A, B corresponding and on the distributing head are connected
The J of welding type screw socket II outlet be bolted be threaded onto vaporizer use the liquid pipeline,
The K outlet of welding type screw socket III is bolted with the pressure pipeline that is threaded onto vaporizer,
The stop valve II is threadedly connected to welding type screw socket I, and the N entrance of stop valve II is connected with pressure pipeline, and the gas returning port R outlet of stop valve II can connect outside muffler,
The front end of topping up safety check is threadedly connected to the topping up joint, and filled mouthful of M entrance of topping up safety check rear end can connect outside topping up pipe,
An interface of cross fitting is threadedly connected to the lateral aperture of distributing head by a straight coupling, and in addition three interfaces of cross fitting are connected with respectively secondary safety valve, pressure gauge, primary safety valve for inner container.
During LNG Liquefied natural gas (LNG) gas cylinder topping up:
Outside topping up pipe is connected in filled mouthful of M entrance of topping up safety check, outside muffler is connected in the gas returning port R outlet of stop valve II, open the stop valve II, close stop valve I and stop valve III, LNG liquid enters from filling a mouthful M entrance, this moment, the topping up safety check was opened automatically, and LNG liquid enters gas cylinder through the topping up safety check from the A mouth.Along with being filled with of LNG liquid, in the bottle with the part gaseous natural gas of liquid LNG coexistence from the D outlet through pressure gauge, primary safety valve for inner container, secondary safety valve to the muffler that is connected in stop valve II gas returning port R outlet, enter outside recovering device.In the topping up process, the level meter sensor cluster detects the height of liquid level in the bottle, dynamically shows the variation of liquid level in the whole topping up process, when liquid level reaches desired location, topping up safety check autoshutdown, topping up stops, close the stop valve II, remove external topping up pipe, muffler.
During LNG Liquefied natural gas (LNG) gas cylinder feed flow:
Open stop valve I, stop valve II and stop valve III,
1) if the gas pressure of the interior gaseous natural gas of bottle is higher than the setting pressure of economic air throttle, this moment, economic air throttle can be opened automatically, one-way throttle valve is in closed condition, rock gas gas gas phase pipeline in the gas cylinder is flowed out by the D outlet in the bottle, arrive Emergeny Cutoff Valves through economic air throttle, stop valve III, through Emergeny Cutoff Valves to J outlet, again through the J outlet be spirally connected be threaded onto vaporizer enter automobile-used vaporizer for vehicle with the liquid pipeline, a bottle interior rock gas is preferentially confessed with gaseous form at this moment.
2) if the interior rock gas gas pressure of bottle is lower than the setting pressure of economic air throttle, this moment economic air throttle autoshutdown, one-way throttle valve is opened, liquid LNG liquid pipe in the bottle is flowed out by the C outlet of distributing head in the bottle, arrive Emergeny Cutoff Valves through one-way throttle valve, stop valve III, through Emergeny Cutoff Valves to J outlet, again through the J outlet be spirally connected be threaded onto vaporizer with the vaporization of liquid device for cleaning pipeline overflash device after for vehicle.When the rock gas gas pressure in using the liquid pipeline after the vaporization was too high, part LNG liquid flowed back to gas cylinder from the throttling pore on the one-way throttle valve, keeps the pressure of the inside of a bottle balance.
3) if the interior rock gas gas pressure of bottle is lower than the setting pressure of supercharging pressure regulator valve, this moment, economic air throttle was closed, one-way throttle valve and supercharging pressure regulator valve are opened, liquid LNG liquid pipe in the bottle is flowed out by the C outlet of distributing head in the bottle, part LNG liquid arrives Emergeny Cutoff Valves through one-way throttle valve, stop valve III, through Emergeny Cutoff Valves to J outlet, again through the J outlet be spirally connected be threaded onto vaporizer with the vaporization of liquid device for cleaning pipeline overflash device after for vehicle.Have in addition simultaneously part LNG liquid through stop valve I, supercharging pressure regulator valve to the K outlet, after the vaporizer vaporization that outlet is spirally connected through K, backflowing from the boost port N entrance of stop valve II by pressure pipeline enters gas cylinder, increases the interior gas pressure of gas cylinder.When gas pressure in the bottle is higher than the setting pressure of supercharging pressure regulator valve, supercharging pressure regulator valve autoshutdown.
In topping up, the feed flow/air feed process, the level meter sensor cluster detects the height of liquid level in the bottle, and the pressure of gas changes in the pressure gauge Real-Time Monitoring bottle, and the double insurance that primary safety valve for inner container and secondary safety valve form can effectively guarantee gas cylinder and security of system.
The utility model is compared the beneficial effect that produces with prior art:
1, is assemblied on the distributing head by the valve Integrated design with a plurality of standalone features, a large amount of external connecting pipes road between having saved in the prior art from the distributing head to the valve, effectively reduced the heat transmission, improved the use efficiency, low temperature cylinder valve field belongs to pioneering at home.
2, owing to the distance that has shortened between valve and the valve, structurally greatly reduced node, compact structure is reasonable, and manufacturing, installation and maintenance cost are low, detection, easy to maintenance quick.
3, it is little that it has wearing and tearing, long service life, the advantage such as reliability is high, Security is good.
Description of drawings
Fig. 1 is the structural representation of the Vehicular liquefied natural gas cylinder integrated valve of the utility model.
Fig. 2 is the structural representation of distributing head 1 among Fig. 1.
Fig. 3 is the P-P sectional view of Fig. 1.
Fig. 4 is the Q-Q sectional view of Fig. 1.
Fig. 5 is the schematic diagram of the Vehicular liquefied natural gas cylinder integrated valve of the utility model.
Embodiment
Below in conjunction with accompanying drawing most preferred embodiment of the present utility model is further described.
Referring to accompanying drawing 1～5, a kind of Vehicular liquefied natural gas cylinder integrated valve, it comprises distributing head 1, one-way throttle valve 2, stop valve I 3, stop valve II 4, welding type screw socket I 5, level meter sensor cluster 6, secondary safety valve 7, pressure gauge 8, cross fitting 9, primary safety valve for inner container 10, economic air throttle 11, Emergeny Cutoff Valves 12, welding type screw socket II 13, stop valve III 14, topping up joint 15, topping up safety check 16, supercharging pressure regulator valve 17, welding type screw socket III 18, throttle valve gland and black box 19, vaporizer 20.
Distributing head 1 is the inner porous cavity of reserving pipeline of oblate cylindricality, there are 7 threaded joint B, C, D, E, F, G, H in the upper-end surface of distributing head 1, all with dual low temperature resistant Sealing sealing and respectively by direct integrated C, D, E, F, G, the B threaded joint that is bolted in distributing head 1 upper-end surface of screw thread, one-way throttle valve 2 is bolted in the H threaded joint of distributing head 1 upper-end surface and seals fixing by throttle valve gland and black box 19 for stop valve I 3, level meter sensor cluster 6, economic air throttle 11, Emergeny Cutoff Valves 12, stop valve III 14, supercharging pressure regulator valve 17.
A, the C soldering opening of distributing head 1 lower end surface connect respectively the liquid pipe that is built in gas cylinder, and the D soldering opening of distributing head 1 lower end surface connects the gas phase pipeline that is built in gas cylinder.
Welding type screw socket I 5, welding type screw socket II 13, topping up joint 15 and welding type screw socket III 18 are welded respectively and form an integral body in the corresponding side opening in distributing head 1 side and with distributing head 1, and welding type screw socket I 5, welding type screw socket II 13, topping up joint 15 and welding type screw socket III 18 respectively four interfaces of D, F, A, B corresponding and on the distributing head 1 are connected.
What be threaded onto vaporizer 20 is bolted in the J outlet of welding type screw socket II 13 with the liquid pipeline, liquid LNG through vaporizer 20 vaporizations after by entering automobile-used vaporizer for vehicle with the liquid pipeline.
The pressure pipeline that is threaded onto vaporizer 20 is bolted in the K outlet of welding type screw socket III 18, when the rock gas gas pressure is lower than the setting pressure of supercharging pressure regulator valve 17 in the bottle, can enter gas cylinder with backflowing from the boost port N entrance of stop valve II 4 through the gaseous natural gas after vaporizer 20 vaporization by this pressure pipeline, increase the gas pressure in the gas cylinder.
Stop valve II 4 is threadedly connected to welding type screw socket I 5, and the boost port N entrance of stop valve II 4 tops is communicated with the pressure pipeline that is bolted in welding type screw socket III 18 K outlet, and the gas returning port R outlet of stop valve II 4 belows can connect outside muffler.
The front end of topping up safety check 16 is threadedly connected to topping up joint 15, and filled mouthful of M entrance of topping up safety check 16 rear ends can connect outside topping up pipe.
An interface of cross fitting 9 is threadedly connected to the side opening of distributing head 1 side by a straight coupling, and secondary safety valve 7, pressure gauge 8, primary safety valve for inner container 10 are connected in addition three interfaces of cross fitting 9.
Referring to accompanying drawing 5, during LNG Liquefied natural gas (LNG) gas cylinder topping up:
Outside topping up pipe is connected in filled mouthful of M entrance of topping up safety check 16, outside muffler is connected in the gas returning port R outlet of stop valve II 4, open stop valve II 4, close stop valve I 3 and stop valve III 14, LNG liquid enters from filling a mouthful M entrance, topping up safety check 16 is opened automatically at this moment, and LNG liquid enters gas cylinder through topping up safety check 16 from the A mouth.Along with being filled with of LNG liquid, in the bottle with the part gaseous natural gas of liquid LNG coexistence from the D outlet through pressure gauge 8, primary safety valve for inner container 10, secondary safety valve 7 to the muffler that is connected in stop valve II 4 gas returning port R outlet, enter outside recovering device.In the topping up process, level meter sensor cluster 6 detects the height of liquid level in the bottle, dynamically shows the variation of liquid level in the whole topping up process, when liquid level reaches desired location, topping up safety check 16 autoshutdowns, topping up stops, close stop valve II 4, remove external topping up pipe, muffler.
During LNG Liquefied natural gas (LNG) gas cylinder feed flow:
Open stop valve I 3, stop valve II 4 and stop valve III 14,
1) if the gas pressure of the interior gaseous natural gas of bottle is higher than the setting pressure of economic air throttle 11, this moment, economic air throttle 11 can be opened automatically, one-way throttle valve 2 is in closed condition, rock gas gas gas phase pipeline in the gas cylinder is flowed out by the D outlet in the bottle, arrive Emergeny Cutoff Valves 12 through economic air throttle 11, stop valve III 14, through Emergeny Cutoff Valves 12 to J outlets, again through J outlet be spirally connected be threaded onto vaporizer 20 enter automobile-used vaporizer for vehicle with the liquid pipeline, a bottle interior rock gas is preferentially confessed with gaseous form at this moment.
2) if the interior rock gas gas pressure of bottle is lower than the setting pressure of economic air throttle 11, this moment economic air throttle 11 autoshutdowns, one-way throttle valve 2 is opened, liquid LNG liquid pipe in the bottle is flowed out by the C outlet of distributing head 1 in the bottle, arrive Emergeny Cutoff Valves 12 through one-way throttle valve 2, stop valve III 14, through Emergeny Cutoff Valves 12 to the J outlet, again through the J outlet be spirally connected be threaded onto vaporizer 20 with 20 vaporizations of liquid device for cleaning pipeline overflash device after for vehicle.When the rock gas gas pressure in using the liquid pipeline after the vaporization was too high, part LNG liquid flowed back to gas cylinder from the throttling pore on the one-way throttle valve 2, keeps the pressure of the inside of a bottle balance.
3) if the interior rock gas gas pressure of bottle is lower than the setting pressure of supercharging pressure regulator valve 17, this moment, economic air throttle 11 was closed, one-way throttle valve 2 and supercharging pressure regulator valve 17 are opened, liquid LNG liquid pipe in the bottle is flowed out by the C outlet of distributing head 1 in the bottle, part LNG liquid arrives Emergeny Cutoff Valves 12 through one-way throttle valve 2, stop valve III 14, through Emergeny Cutoff Valves 12 to the J outlet, again through the J outlet be spirally connected be threaded onto vaporizer 20 with 20 vaporizations of liquid device for cleaning pipeline overflash device after for vehicle.Part LNG liquid is arranged simultaneously in addition through stop valve I 3,17 to the K outlets of supercharging pressure regulator valve, after vaporizer 20 vaporizations that outlet is spirally connected through K, backflowing from the boost port N entrance of stop valve II 4 by pressure pipeline enters gas cylinder, increases the gas pressure in the gas cylinder.When gas pressure in the bottle is higher than the setting pressure of supercharging pressure regulator valve 17, supercharging pressure regulator valve 17 autoshutdowns.
In topping up, the feed flow/air feed process, level meter sensor cluster 6 detects the height of liquid level in the bottle, dynamically show the variation of liquid level in the whole topping up process, the pressure of gas changes in the pressure gauge 8 Real-Time Monitoring bottles, and the double insurance that primary safety valve for inner container 10 and secondary safety valve 7 form can effectively guarantee gas cylinder and security of system.
Claims (3)
1. a Vehicular liquefied natural gas cylinder integrated valve is characterized in that it comprises distributing head (1), one-way throttle valve (2), stop valve I (3), stop valve II (4), welding type screw socket I (5), level meter sensor cluster (6), secondary safety valve (7), pressure gauge (8), cross fitting (9), primary safety valve for inner container (10), economic air throttle (11), Emergeny Cutoff Valves (12), welding type screw socket II (13), stop valve III (14), topping up joint (15), topping up safety check (16), supercharging pressure regulator valve (17), welding type screw socket III (18), throttle valve gland and black box (19), vaporizer (20);
Distributing head (1) is the inner porous cavity of reserving pipeline of oblate cylindricality, and there are 7 threaded joint B, C, D, E, F, G, H in the upper-end surface of distributing head (1);
All with dual low temperature resistant Sealing sealing and respectively by direct integrated C, D, E, F, G, the B threaded joint that is bolted in distributing head (1) upper-end surface of screw thread, one-way throttle valve (2) is bolted in the H threaded joint of distributing head (1) upper-end surface and seals fixing by throttle valve gland and black box (19) for stop valve I (3), level meter sensor cluster (6), economic air throttle (11), Emergeny Cutoff Valves (12), stop valve III (14), supercharging pressure regulator valve (17);
Welding type screw socket I (5), welding type screw socket II (13), topping up joint (15) and welding type screw socket III (18) are welded respectively in the side opening of distributing head (1), form an integral body with distributing head (1);
Stop valve II (4) is threadedly connected to welding type screw socket I (5), and the front end of topping up safety check (16) is threadedly connected to topping up joint (15), and the rear end of topping up safety check (16) can connect outside topping up pipe;
The J of welding type screw socket II (13) outlet be bolted be threaded onto vaporizer (20) use the liquid pipeline, the K of welding type screw socket III (18) exports and is bolted with the pressure pipeline that is threaded onto vaporizer (20);
An interface of cross fitting (9) is threadedly connected to the side opening of distributing head (1) side by a straight coupling, and secondary safety valve (7), pressure gauge (8), primary safety valve for inner container (10) are connected in addition three interfaces of cross fitting (9);
A, the C soldering opening of distributing head (1) lower end surface connect respectively the liquid pipe that is built in gas cylinder, and the D soldering opening of distributing head (1) lower end surface connects the gas phase pipeline that is built in gas cylinder.
2. Vehicular liquefied natural gas cylinder integrated valve according to claim 1, there is boost port N entrance the top that it is characterized in that described stop valve II (4), there is gas returning port R outlet the below of stop valve II (4), the N entrance of top is communicated with the pressure pipeline that is bolted in welding type screw socket III (18) K outlet, and the R outlet of below can connect outside muffler.
3. Vehicular liquefied natural gas cylinder integrated valve according to claim 1 is characterized in that welding type screw socket I (5), welding type screw socket II (13), topping up joint (15) and welding type screw socket III (18) difference four interfaces of D, F, A, B corresponding and on the distributing head (1) that distributing head (1) side is welded are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220245534 CN202812791U (en) | 2012-05-29 | 2012-05-29 | Gas cylinder integrated valve for automotive liquefied natural gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220245534 CN202812791U (en) | 2012-05-29 | 2012-05-29 | Gas cylinder integrated valve for automotive liquefied natural gas |
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| Publication Number | Publication Date |
|---|---|
| CN202812791U true CN202812791U (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220245534 Withdrawn - After Issue CN202812791U (en) | 2012-05-29 | 2012-05-29 | Gas cylinder integrated valve for automotive liquefied natural gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202812791U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679149A (en) * | 2012-05-29 | 2012-09-19 | 江南工业集团有限公司 | Gas cylinder integrated valve for automotive liquefied natural gas |
-
2012
- 2012-05-29 CN CN 201220245534 patent/CN202812791U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679149A (en) * | 2012-05-29 | 2012-09-19 | 江南工业集团有限公司 | Gas cylinder integrated valve for automotive liquefied natural gas |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130320 Effective date of abandoning: 20131106 |
|
| RGAV | Abandon patent right to avoid regrant |